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Finding the Fourth Proportional to 474.36, 710.82 and 217.32

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Solution

The fourth proportional to 474.36, 710.82 and 217.32 is: 325.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.36 : 710.82 = 217.32 : x
  2. Step 2: Convert to fraction form
    474.36/710.82 = 217.32/x
  3. Step 3: Cross multiply
    474.36x = 710.82 × 217.32
  4. Step 4: Simplify right side
    474.36x = 154,475.40
  5. Step 5: Solve for x
    x = 154,475.40/474.36
  6. Step 6: Final answer
    x = 325.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.